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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Russian Journal of Biological Physics and Chemisrty</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Russian Journal of Biological Physics and Chemisrty</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">2499-9962</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">54015</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>МОЛЕКУЛЯРНАЯ БИОФИЗИКА И ФИЗИКА БИОМОЛЕКУЛ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>MOLECULAR BIOPHYSICS AND PHYSICS OF BIOMOLECULES</subject>
    </subj-group>
    <subj-group>
     <subject>МОЛЕКУЛЯРНАЯ БИОФИЗИКА И ФИЗИКА БИОМОЛЕКУЛ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">STRUCTURE-FUNCTIONAL ORGANIZATION OF THE CARDIOACTIVE NONAPEPTIDE</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>СТРУКТУРНО-ФУНКЦИОНАЛЬНАЯ ОРГАНИЗАЦИЯ КАРДИОАКТИВНОГО НОНАПЕПТИДА</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Исмаилова</surname>
       <given-names>Лариса И.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ismailova</surname>
       <given-names>L. I.</given-names>
      </name>
     </name-alternatives>
     <email>Larisa_Ismailova@yahoo.com</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Аббаслы</surname>
       <given-names>Р М</given-names>
      </name>
      <name xml:lang="en">
       <surname>Abbasli</surname>
       <given-names>R M</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Ахмедов</surname>
       <given-names>Намик А.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Akhmedov</surname>
       <given-names>N. A.</given-names>
      </name>
     </name-alternatives>
     <bio xml:lang="ru">
      <p>доктор физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>doctor of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Бакинский государственный университет</institution>
     <city>Баку</city>
     <country>Азербайджан</country>
    </aff>
    <aff>
     <institution xml:lang="en">Baku State University</institution>
     <city>Baku</city>
     <country>Azerbaijan</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Бакинский государственный университет, Институт физических проблем</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Baku State University, Institute for Physical Problems</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Бакинский государственный университет</institution>
     <city>Баку</city>
     <country>Азербайджан</country>
    </aff>
    <aff>
     <institution xml:lang="en">Baku State University</institution>
     <city>Baku</city>
     <country>Azerbaijan</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2016-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2016</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2016-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2016</year>
   </pub-date>
   <volume>1</volume>
   <issue>1</issue>
   <fpage>144</fpage>
   <lpage>148</lpage>
   <history>
    <date date-type="received" iso-8601-date="2016-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2016</year>
    </date>
    <date date-type="accepted" iso-8601-date="2016-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2016</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/54015/view">https://rusjbpc.ru/en/nauka/article/54015/view</self-uri>
   <abstract xml:lang="ru">
    <p>С помощью метода молекулярной механики были определены пространственное строение и конформационные свойства кардиоактивной нонапептидной молекулы Pro-Phe-Cys-Asn-Ala-Phe-Tyr-Gly-Cys- NH2 (CCAP, Crustacean cardioactive peptide). Данный пептид был впервые выделен из сердечной мышцы морского краба Carcinus maenas, где он выполнял сократительную функцию. Молекула присутствует так же в сердце насекомых, лобстеров. Помимо сократительной функции, кардиоактивный нонапептид является переносчиком нервных импульсов в центральной нервной системе, а также относится к классу гормонов. Молекула представляет собой циклический нонапептид с первичной структурой PFCNAFTGC-NH2 и дисульфидной связью между аминокислотными остатками Cys3 и Cys9. Потенциальная энергия этой молекулы оценивалась как сумма невалентных, электростатических, торсионных взаимодействий и энергии водородных связей. Найдены 7 низкоэнергетических конформаций для нонапептида ССАР, значения двугранных углов основной и боковых цепей, оценена энергия внутри- и межостаточных взаимодействий. Расчет показал, что низкоэнергетическими для нонапептида являются полусвернутые формы основной цепи, приводящие к сближенности боковых цепей цистеинов. Циклические формы сближают участки основной цепи и боковые цепи аминокислот, входящих в нонапептид, что приводит к их эффективным взаимодействиям.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The spatial structure of cardioactive nonapeptide molecule Pro-Phe-Cys-Asn-Ala-Phe-Tyr-Gly-Cys- NH2 (CCAP, Crustacean cardioactive peptide) and the conformational properties were investigated using molecular mechanics method. This peptide was first isolated from the pericardial organs of the shore crab Carcinus maenas. It is found in crustaceans and insects where it behaves as a cardioaccelerator, neuropeptide transmitter for other areas of the neurous system and a hormone. Crustacean cardioactive peptide is highly conserved, amidated cyclic nonapeptide with the primary structure PFCNAFTGC-NH2 and disulfide bridge between Cys3 and Cys9. The potential energy of the molecule was chosen as the sum of the non-valent, electrostatic and torsional interaction energies and the energy of hydrogen bonds. The 7 low-energy conformations of this molecule, the dihedral angles of the backbone and side chains of the amino acid residues of the tetrapeptide, and the energies of intra- and inter-residual interactions were determined. It is revealed that low energy conformations of this molecule have cyclic type of backbone. These folded forms bring parts of the backbone and the side chains of the amino acids together, and they result in convenient interactions.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>нонапептид</kwd>
    <kwd>конформация</kwd>
    <kwd>молекула</kwd>
    <kwd>пространственная структура</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>nonapeptide</kwd>
    <kwd>conformation</kwd>
    <kwd>molecule</kwd>
    <kwd>spatial structure</kwd>
   </kwd-group>
  </article-meta>
 </front>
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  <p></p>
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